i have a B/S 8hp horiszontal shaft engine mounted on a DR brush/field mower. mod:195422 type:1136 01 code:9311031A i recently came into this machine and as the previous owner said, it had issues. i found one problem and fixed it. that was the hole in the carb float that had let gas into it, reducing its flotation and thus letting the gas flood the whole carb. i repaired the float. however it is still having issues. it is not running right because the needles had been adjusted to try to deal with the super rich situation. i have been working on re tuning it with some success. it is now running but not very well. it is running rough with alot of govoner action. basically the engine speed is varying between what i would guess to be 2800 and 3600 on 1 second intervals. i also decided to see what the head looked like. so i pulled the head and while inspecting the cylinder i noticed what looked like some carbonization from some slight blow by. it only goes to about a half of an inch below the top of the piston a TDC. i have two questions. what are the factory needle settings? what other problems might i be missing? Thanks in advance for all of your help.